Sash-lock.



J. W. SGHUBLB.

SASH LOCK.

APPLICATION FILED APR. 9, 1913.

abtowag COLUMBIA PLANOGRAPH CO WASHINGTON, D. c.

Patented Apr. 21, 1914.

UNIT STATES PATENT OFFICE.

JOHN W. SCHUBLE, OF LOUISVILLE, KENTUCKY.

SASH-LOGK.

Application filed April 9, 1913.

To all whom it may concern:

Be it known that I, JOHN N; SoriuBLn, a citizen of the United States, residing at Louisville, in the county of Jefferson an State of Kentucky, have invented certain new and useful Improvements in Sash- Locks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in window sash locks and the object in view is to produce a" slmple and efiicient device of this nature consisting of a spring-pressed screw carried by the top rail of the lower sash and adapted to engage a threaded aperture in a plate in the adjacent edge of the lower rail of the upper sash.

The invention consists of various details of construction and combinations and arrangements of parts which will be hereinafter fully described, shown in the accompanying drawings and then specifically defined in the appended claim.

I illustrate my invention in the accompanying drawings, in which Figure 1 is a sectional view transversely through the two sash locked together. Fig. 2 is a face view of the inner edge of the lower rail of the upper sash, and Fig. 8 is an edge view of the rail of the upper sash.

Reference now being had to the details of the drawings by letter, A designates the lower rail of the upper sash of a window, having a recess B in the edge thereof in which a plate G is seated flush with the beveled face of said rail and is provided with a central threaded aperture D.

The upper rail of the lower sash is designated by letter E- and has its inner face inclined to conform to the inclination or bevel of the edge in the lower rail of the upper sash and provided with a chambered portion F which is shouldered as at F with an aperture leading through from the bottom of the recess in the chamber to the opposite side. A screw, designated by letter G, passes through said chambered portion and is adapted to project through the aperture leading through the bottom wall of the Specification of Letters Patent.

Patented Apr. 21, 1914.

Serial No. 760,068.

chamber and extend beyond the inner edge of the rail E. Said screw is provided with a shoulder H, and I is a plate fastened to the'outer face of the rail E and which is apertured for the reception of the shank portion of the screw which is ournaled therein, said plate being fastened to the rail in any suitable manner. A nut K is mounted upon the threaded portion of the screw and also a washer N, which washer is adapted to bear against the bottom of the chamber in the rail E, and a coiled spring 0 is interposed between said washer and the nut. An open-ended shell R is fitted within the aperture leading from the bottom of the chamber through the inner edge of the rail E and through which the end of the screw is adapted to project as it is screwed into the aperture D. Said spring is adapted to normally hold the end of the screw within the shell Rso that it will not interfere with the raising and lowering of the sash when the latter are not locked.

The operation of my invention will be readily understood and is as follows: When the parts are assembled as shown and it is desired to lock the window sash, the screw may be pressed in against the tension of the spring to cause the inner end of the screw which is tapering to engage the threaded aperture D and, when screwed therein, will serve as a secure means for holding the sash together. lVhen it is desired to unlock the sash, the screw may be turned in the reverse direction to release the same from the threaded walls of the aperture D and the spring will throw the screw back in the chambered portion of the rail E, so that the tapering end of the screw will not interfere with the adjacent edge of the sash.

What I claim to be new is A sash lock comprising, in combination with the lower rail of an upper sash and the upper rail of a lower sash, having their adjacent faces inclined, a recess formed in one inclined face with a hole leading into the sash at the bottom of the recess, a plate engaging said recess and having its outer edge flush with the inclined edge of the sash, said plate provided with a threaded opening registering with the hole in the sash, the other sash having a transverse recess which is contracted, forming a shoulder, an openended shell extending through the contracted part of said recess and having its outer end flush with the inclined edge of the sash and its inner end flush with said shoulder, a washer bearing against said shoulder and shell, an apertured plate en gaging the outer edge of the rail in which the shell is mounted, a screw passing through said plate and washer, a nut upon the shank portion of the screw, a spring interposed between the Washer and nut and tending 10 to normally hold the threaded part of the 1 screw within said shell and out of engagement with the threaded hole in the plate in the other sash, as set forth.

In testimony whereof I hereunto aflix my signature in presence of two witnesses.

JOHN W. SCHUBLE.

Witnesses:

BENJ. HOMILL, C. A. WALTER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

